The main strength of the Guardian's sustainability influence is through its outstanding environmental and social justice content. But what of the rest of its coverage with less obvious sustainability connections: Sport, Fashion, Travel, Motoring, Business, Money? Is this content living the values? And if so, how can we tell?

To assess this, we interviewed a sample of three editorial departments: Travel, Fashion and Society. It was encouraging to see that all three demonstrated an appreciation of the key sustainability issues relating to their area. We saw evidence that sustainability was being taken into account when choosing content and in the viewpoint taken on specific issues.

Like most editorial newsrooms, the approach by most desk editors is neither systematic nor consistent and we recognise that setting targets is not an appropriate approach. At the same time, we recommend that the Guardian engages further with the wider editorial teams on embedding sustainability more deeply, as the departments interviewed tend to respond to readers concerns, rather than engaging directly with the editorial component of the sustainability vision. We are encouraged to see this focus in the new sustainability strategy.

Two highlights of the year were the 10:10 campaign and the Katine project. The former is an excellent demonstration of the Guardian using its influence in encouraging individuals and organisations to commit to reducing carbon emissions by 10% by 2010. The next step will be to evaluate how successful those who joined were in achieving their 10% reduction and report back on the challenges as well as the successes.

Likewise, Katine has been another highly successful demonstration of how the Guardian can use its influence to catalyse change. As that project comes to an end, we are encouraged that the Guardian is considering how to use its editorial prowess, building on the Katine experience, to report more widely on issues of international development.

A deeper change that is already transforming the Guardian's sustainability coverage is the move towards mutualisation. Such an inclusive approach is a promising sign that stakeholder engagement, far from being a technical activity undertaken by the sustainability department, is increasingly becoming a dynamic part of daily life of the editorial teams. While some areas may be more active than others, we believe this has the potential to put stakeholders at the heart of the Guardian's editorial coverage.